Thanks, I've been off line a little while now, but I'm back.

I absolutely agree about the fuel pressure regulator now. I ended up getting a Holley 1208, offered by KW. It has a range between 1 to 4 lbs. The instructions indicate that the pressure can effect the float height, so I'm confident that I'm on the right track: set the float height as close as I can to factory spec and then adjust the fuel pressure to as close as I can get to 1.5 lbs.

Any recommendations on where to mount it? I was thinking of someplace near the carb or mounted to the fender opposite of the fuel pump.

Re: the radiator: Thanks for the tip. I wasn't so sure. All the stuff I could find on the web only indicates stop leak is good for emergency fixes. I also had a friend that completely screwed up his newish Ford SUV. My other collector cars are Saab C900s and I wouldn't dream of putting stop leak in them--way too much precision engineering. Because the Willys are so rough 'n tough, I thought they might be able to take it. Thanks again for the caution.